/*
 *
 * Copyright (c) 2011 The Android Open Source Project
 * Copyright (c) 2015, alipay.com
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * 	art_5_1.h
 *
 * @author : sanping.li@alipay.com
 *
 */
#include <string.h>
#include <jni.h>
#include <stdio.h>
#include <fcntl.h>
#include <dlfcn.h>

#include <stdint.h>    /* C99 */

typedef unsigned char u1;
typedef unsigned short u2;
typedef unsigned int u4;
typedef signed char s1;
typedef signed short s2;
typedef signed int s4;

namespace art {
    namespace mirror {
        class Object {
        public:
            // The number of vtable entries in java.lang.Object.
            uint32_t klass_;

            uint32_t monitor_;
        };

        class Class : public Object {
        public:
            // Interface method table size. Increasing this value reduces the chance of two interface methods
            // colliding in the interface method table but increases the size of classes that implement
            // (non-marker) interfaces.
            // defining class loader, or NULL for the "bootstrap" system loader
            uint32_t class_loader_;
            // For array classes, the component class object for instanceof/checkcast
            // (for String[][][], this will be String[][]). NULL for non-array classes.
            uint32_t component_type_;
            // DexCache of resolved constant pool entries (will be NULL for classes generated by the
            // runtime such as arrays and primitive classes).
            uint32_t dex_cache_;
            // Short cuts to dex_cache_ member for fast compiled code access.
            uint32_t dex_cache_strings_;
            // static, private, and <init> methods
            uint32_t direct_methods_;
            // instance fields
            //
            // These describe the layout of the contents of an Object.
            // Note that only the fields directly declared by this class are
            // listed in ifields; fields declared by a superclass are listed in
            // the superclass's Class.ifields.
            //
            // All instance fields that refer to objects are guaranteed to be at
            // the beginning of the field list.  num_reference_instance_fields_
            // specifies the number of reference fields.
            uint32_t ifields_;
            // The interface table (iftable_) contains pairs of a interface class and an array of the
            // interface methods. There is one pair per interface supported by this class.  That means one
            // pair for each interface we support directly, indirectly via superclass, or indirectly via a
            // superinterface.  This will be null if neither we nor our superclass implement any interfaces.
            //
            // Why we need this: given "class Foo implements Face", declare "Face faceObj = new Foo()".
            // Invoke faceObj.blah(), where "blah" is part of the Face interface.  We can't easily use a
            // single vtable.
            //
            // For every interface a concrete class implements, we create an array of the concrete vtable_
            // methods for the methods in the interface.
            uint32_t iftable_;
            // Descriptor for the class such as "java.lang.Class" or "[C". Lazily initialized by ComputeName
            uint32_t name_;
            // Static fields
            uint32_t sfields_;
            // The superclass, or NULL if this is java.lang.Object, an interface or primitive type.
            uint32_t super_class_;
            // If class verify fails, we must return same error on subsequent tries.
            uint32_t verify_error_class_;
            // Virtual methods defined in this class; invoked through vtable.
            uint32_t virtual_methods_;
            // Virtual method table (vtable), for use by "invoke-virtual".  The vtable from the superclass is
            // copied in, and virtual methods from our class either replace those from the super or are
            // appended. For abstract classes, methods may be created in the vtable that aren't in
            // virtual_ methods_ for miranda methods.
            uint32_t vtable_;
            // Access flags; low 16 bits are defined by VM spec.
            uint32_t access_flags_;
            // Total size of the Class instance; used when allocating storage on gc heap.
            // See also object_size_.
            uint32_t class_size_;
            // Tid used to check for recursive <clinit> invocation.
            pid_t clinit_thread_id_;
            // ClassDef index in dex file, -1 if no class definition such as an array.
            // TODO: really 16bits
            int32_t dex_class_def_idx_;
            // Type index in dex file.
            // TODO: really 16bits
            int32_t dex_type_idx_;
            // Number of instance fields that are object refs.
            uint32_t num_reference_instance_fields_;
            // Number of static fields that are object refs,
            uint32_t num_reference_static_fields_;
            // Total object size; used when allocating storage on gc heap.
            // (For interfaces and abstract classes this will be zero.)
            // See also class_size_.
            uint32_t object_size_;
            // Primitive type value, or Primitive::kPrimNot (0); set for generated primitive classes.
            uint32_t primitive_type_;
            // Bitmap of offsets of ifields.
            uint32_t reference_instance_offsets_;
            // Bitmap of offsets of sfields.
            uint32_t reference_static_offsets_;
            // State of class initialization.
            int32_t status_;
            // TODO: ?
            // initiating class loader list
            // NOTE: for classes with low serialNumber, these are unused, and the
            // values are kept in a table in gDvm.
            // InitiatingLoaderList initiating_loader_list_;
            // The following data exist in real class objects.
            // Embedded Imtable, for class object that's not an interface, fixed size.
            // ImTableEntry embedded_imtable_[0];
            // Embedded Vtable, for class object that's not an interface, variable size.
            // VTableEntry embedded_vtable_[0];
            // Static fields, variable size.
            // uint32_t fields_[0];
            // java.lang.Class
            static void *java_lang_Class_;
        };

        class ArtField : public Object {
        public:
            uint32_t declaring_class_;
            int32_t access_flags_;
            int32_t field_dex_idx_;
            int32_t offset_;
        };

        class ArtMethod : public Object {
        public:
            // Field order required by test "ValidateFieldOrderOfJavaCppUnionClasses".
            // The class we are a part of. 适配andfix  不能做到这一改
            uint32_t declaring_class_;


            // Short cuts to declaring_class_->dex_cache_ member for fast compiled code access. dex
            uint32_t dex_cache_resolved_methods_;
            // Short cuts to declaring_class_->dex_cache_ member for fast compiled code access.
            uint32_t dex_cache_resolved_types_;
            // Access flags; low 16 bits are defined by spec.
            uint32_t access_flags_;
            /* Dex file fields. The defining dex file is available via declaring_class_->dex_cache_ */
            // Offset to the CodeItem.
            uint32_t dex_code_item_offset_;
            // Index into method_ids of the dex file associated with this method.
            uint32_t dex_method_index_;
            /* End of dex file fields. */
            // Entry within a dispatch table for this method. For static/direct methods the index is into
            // the declaringClass.directMethods, for virtual methods the vtable and for interface methods the
            // ifTable.
            uint32_t method_index_;
            // Fake padding field gets inserted here.
            // Must be the last fields in the method.
            struct PtrSizedFields {
                // Method dispatch from the interpreter invokes this pointer which may cause a bridge into
                // compiled code.java方法   ----》 虚拟机   ----》方法的入口 entry_point_from_interpreter_
                //art  解释模式  机器码
                void *entry_point_from_interpreter_;
                // Pointer to JNI function registered to this method, or a function to resolve the JNI function.
                void *entry_point_from_jni_;
                // Method dispatch from quick compiled code invokes this pointer which may cause bridging into
                // portable compiled code or the interpreter.
//                 机器码模式
                void *entry_point_from_quick_compiled_code_;
            } ptr_sized_fields_;
            static void *java_lang_reflect_ArtMethod_;
        };

    }
}
